Regulatory publication source observations

Explore historical FAA publications.

Explore exact source observations across the pinned 12,951-publication collection. Unclassified wording and source gaps remain unknown.

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Exact labels preserve the printed source wording, case and punctuation. Model lists use a strict supported grammar; other wording remains unclassified. Header and reference matches are historical source observations. This search does not compare installed equipment or resolve model identity.

Published 1998-09-28

Airworthiness Directives; Twin Commander Aircraft Corporation Models 500, 500-A, 500-B, 500-S, 500-U, 520, 560, 560-A, 560-E, 560-F, 680, 680-E, 680FL(P), 680T, 680V, 680W, 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695A, 695B, and 720 Airplanes

Federal Register document 98-25774

Exact recorded source observation · Current requirements and aircraft applicability are evaluated separately.

Explore retained publication text and evidence · Search the separate FAA directive metadata catalog

Coverage and limits

These are dated publication metadata, recorded clauses and literal source observations. Word, model-label, header and reference matches do not establish current legal effect, manufacturer/model identity, aircraft applicability, installed configuration or compliance.

The collection uses 33 explicit annual source snapshots. Source captures and operative-text qualifications have separate states. Missing information remains unknown.